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The Formation of a Cluster of Stars and Brown Dwarfs in a Turbulent Molecular Cloud

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The Origins of Stars and Planets: The VLT View

Part of the book series: ESO Astrophysics Symposia ((ESO))

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Abstract

We present preliminary results from the first hydrodynamic calculation to follow the collapse and fragmentation of a large-scale turbulent molecular cloud into a stellar cluster while resolving beyond the opacity limit for fragmentation. The calculation produces a mixture of single and binary stars with comparable numbers of stars and brown dwarfs. Without exception, the brown dwarfs are formed by ejection from unstable multiple systems. The calculation produces a stellar initial mass function in agreement with observations. However, at this stage in the calculation, no high-mass (> 0.03 M⊙) brown dwarfs have been formed because they are ejected too soon after formation to have accreted much mass.

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Author information

Authors and Affiliations

  1. School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, UK

    Matthew R. Bate

  2. School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9SS, UK

    Ian A. Bonnell

  3. Institute of Astronomy, Madingley Road, Cambridge, CB3 0HA, UK

    Matthew R. Bate & Volker Bromm

Authors
  1. Matthew R. Bate
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  2. Ian A. Bonnell
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  3. Volker Bromm
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Editor information

Editors and Affiliations

  1. European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany

    João F. Alves

  2. Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482, Potsdam, Germany

    Mark J. McCaughrean

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© 2002 Springer-Verlag Berlin Heidelberg

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Bate, M.R., Bonnell, I.A., Bromm, V. (2002). The Formation of a Cluster of Stars and Brown Dwarfs in a Turbulent Molecular Cloud. In: Alves, J.F., McCaughrean, M.J. (eds) The Origins of Stars and Planets: The VLT View. ESO Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-40277-1_18

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  • DOI: https://doi.org/10.1007/978-3-662-40277-1_18

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-39255-3

  • Online ISBN: 978-3-662-40277-1

  • eBook Packages: Springer Book Archive

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